Multieffect coupled NGs for multienergy harvesters. (a) Performance of a multieffect coupled NG for harvesting light and heat [34
]. Copyright 2016, American Chemical Society. (b) Multieffect coupled NG utilized to collect solar energy, heat, and wind energy [45
]. Copyright 2017, Wiley. (c) Charging characteristics of a piezo-tribo-pyro-photovoltaic NG for harvesting 405 nm light, thermal, and wind energies [63
]. Copyright 2018, Wiley. (d) Multieffect coupled NG for harvesting light and vibration energies [15
]. Copyright 2019, Royal Society of Chemistry.